If you sat your own GCSEs when they were graded A* to G, the numbers on your child's results can be baffling. Is a 4 good? Is a 9 the same as an A*? Here's exactly how the 9-to-1 system works, in plain English.

9 is the top, 1 is the bottom

England's GCSEs are graded from 9 down to 1, with 9 the highest. A U means ungraded. The scale runs the opposite way to what you might expect: bigger number, better grade.

What counts as a “pass”?

There are two pass marks people talk about, and it causes endless confusion:

  • Grade 4 = a standard pass.This is the one most people mean by “passing”. It's broadly equivalent to the old grade C.
  • Grade 5 = a strong pass. Sixth forms, colleges and employers often ask for a 5, particularly in English and maths.

Students who don't get at least a 4 in English or maths usually have to keep studying those subjects post-16, which is why those two get so much attention.

How the numbers line up with old grades

The mapping isn't exact, because the new scale spreads the top grades across three numbers instead of one, but as a rough guide:

  • 9, 8, 7 cover roughly the old A* and A.
  • 6, 5, 4 cover roughly the old B and C.
  • 3, 2, 1 cover roughly the old D to G.

The big change is at the top: a 9 is higher than the old A*. It was deliberately designed to pick out the very strongest students, so far fewer 9s are awarded than A*s ever were.

Where do grade boundaries come from?

This is the part that worries students most, and it's actually reassuring once you understand it. Grade boundaries, the marks you need for each grade, are not fixed in advance. They're set after every exam has been marked.

If a paper turns out to be harder than usual, the boundaries drop, so a tough paper doesn't punish the students who sat it. Exam boards use a process called comparable outcomes to keep standards steady from year to year, meaning a grade 5 this year represents roughly the same achievement as a grade 5 last year, even if the raw mark needed was different. In short: you're not competing against a fixed pass mark, and a hard paper won't sink you.

What this means for revision

Because boundaries flex with the paper, the winning strategy is boringly simple: know more, reliably. There's no threshold to game and no trick to a hard paper except being well-prepared enough that a few nasty questions don't derail you. That preparation comes from steady retrieval practice, answering questions across the whole course, over weeks, not one panicked weekend.

That's exactly what Revision Genie is built for: free daily question practice from KS2 and KS3 through GCSE and A-level, spaced so topics come back before you forget them. It's the difference between hoping the paper is easy and being ready whatever it throws at you.